[Solved] Link separated words [closed]

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Assuming you have How are you.pdf in a variable you can use parameter expansions:

% a="How are you.pdf"
% echo "${a// /.}"
How.are.you.pdf

The above is a bash expansion and doesn’t work in a POSIX shell. In that case sed or simulare would be needed.

To rename all files in the current directory:

for a in *; do
  [ -f "$a" ] || continue
  mv -- "$a" "${a// /.}"
done

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solved Link separated words [closed]